I thought of this while playing my cell phone's video poker application. And yes, it has something to do with hold 'em (in that if you think about a specific aspect of hold 'em strategy, you should get the answer easily).

You are at a video poker machine in Las Vegas. It plays 5 card draw, no jokers, and features the standard payout (i.e., the lowest winning hand is a pair of "Jacks or better", with progressively higher payouts for better hands).

The hand you are dealt is A J 8 6 3 rainbow.

What card(s) you you discard and what card(s) do you keep, and why?